EP3977970B1 - Procede de fabrication d'article a porter - Google Patents

Procede de fabrication d'article a porter Download PDF

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Publication number
EP3977970B1
EP3977970B1 EP20815400.5A EP20815400A EP3977970B1 EP 3977970 B1 EP3977970 B1 EP 3977970B1 EP 20815400 A EP20815400 A EP 20815400A EP 3977970 B1 EP3977970 B1 EP 3977970B1
Authority
EP
European Patent Office
Prior art keywords
around
web
divided
sheet
torso
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20815400.5A
Other languages
German (de)
English (en)
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EP3977970A1 (fr
EP3977970C0 (fr
EP3977970A4 (fr
Inventor
Takashi Arima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zuiko Corp
Original Assignee
Zuiko Corp
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Filing date
Publication date
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Publication of EP3977970A1 publication Critical patent/EP3977970A1/fr
Publication of EP3977970A4 publication Critical patent/EP3977970A4/fr
Application granted granted Critical
Publication of EP3977970B1 publication Critical patent/EP3977970B1/fr
Publication of EP3977970C0 publication Critical patent/EP3977970C0/fr
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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15585—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers
    • A61F13/15593—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers having elastic ribbons fixed thereto; Devices for applying the ribbons
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15699—Forming webs by bringing together several webs, e.g. by laminating or folding several webs, with or without additional treatment of the webs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
    • A61F13/15739—Sealing, e.g. involving cutting
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
    • A61F13/15747—Folding; Pleating; Coiling; Stacking; Packaging
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15804—Plant, e.g. involving several steps

Definitions

  • the present invention relates to a method for manufacturing a stretchable sheet to be around-torso portions of disposable diapers and pants.
  • a stretchable sheet of this type is desirably provided with around-torso elastic members arranged to extend along the periphery of the torso and parallel to each other, and around-leg elastic members arranged to be curved along the bases of the legs.
  • the around-torso elastic members are arranged to extend parallel to the periphery of the torso so as to make the stretchable sheet fit to the torso.
  • the around-leg elastic members are arranged to be curved along the bases of the legs, thereby preventing leakage of urine, for example.
  • US 2013/0255862 A1 discloses methods and apparatuses for assembling diapers, each including a chassis connected with front and back elastic belts. Opposing end regions of the chassis are connected with regions of the elastic belts where the elasticity of the elastic belts has been removed or deactivated.
  • An elastic laminate may be formed by continuously bonding elastic strands between a first continuous substrate layer and a second continuous substrate layer such that the elastic strands are bonded to both the first substrate layer and the second substrate layer in heavy-bond regions. And the elastic strands are bonded to the first substrate layer and/or the second substrate layer within light-bond regions. The elastic strands are then intermittently deactivated by cutting the strands into one or more discrete pieces in the light-bond regions. The discrete pieces retract and remain in the light-bond regions.
  • US 2008/0099130 A1 discloses a method for producing a disposable worn article including a core portion covering the crotch of the wearer, and a torso portion that fits to the torso of the wearer, wherein the torso portion includes a back portion and a front portion.
  • the method includes: a step of carrying a first web including a waist portion of a first back portion and a second web including a waist portion of a second back portion in the longitudinal direction of the webs; a step of forming a combined member by placing the core portion so as to bridge between the first and second webs; and a step of cutting the combined member so as to divide the combined member into a first group and a second group.
  • the step of arranging elastic members in the straight arrangement and the step of arranging elastic members in a curved arrangement are separate steps. Therefore, there is a need for at least three webs for sandwiching elastic members therebetween, thereby increasing the cost of material fabric and increasing apparatuses for feeding and joining the material fabric, increasing the equipment cost.
  • a method for manufacturing a worn article of the present invention includes:
  • the first divided web W11 for sandwiching the around-torso elastic members FT and the second divided web W12 for sandwiching the around-leg elastic members FL are obtained by slitting a single first continuous web W1. Therefore, the number of rolls of material fabric for the continuous webs can be reduced by one. This also reduces the cost of material fabric itself, and the cost of equipment for replacing and joining material fabric.
  • the around-torso elastic member FT is sandwiched between, and welded to, the first divided web W11 and the second continuous web W2. Therefore, the stretchable continuous sheet S0 is unlikely to be stiff.
  • the around-leg elastic member FL is sandwiched between the second divided web W12 and the layered sheet S and bonded thereto by an adhesive. Therefore, it is possible to arrange the around-leg elastic member FL in a wave-like pattern that is curved along the bases of the legs.
  • the carrying direction refers to the longitudinal direction in which a web or a sheet is carried along the longitudinal direction, and the carrying direction changes as the web or the sheet is redirected (turned).
  • a width D11 of the wider first divided web W11 is smaller than a width D2 of the second continuous web W2, and the first divided web W11 has a first side edge E1 and a second side edge E2 along the carrying direction; and the method further comprises a folding back step of folding a pair of third side edges E3 along the carrying direction of the second continuous web W2 so as to wrap the first and second side edges E1, E2 of the layered sheet S.
  • the side edge of the web is often folded in the upper end area of each around-torso portion. Now, where the side edge of the first divided web W11, which is obtained by dividing the first continuous web W1, is folded, the width of the undivided first continuous web W1 is significantly larger, thereby increasing the bulkiness of the equipment.
  • the second continuous web W2 is layered on a first surface 31 of the first divided web W11;
  • the third side edge E3 of the second continuous web W2 and the edge of the second divided web W12 are both visible on the second surface 32 of the first divided web W11 . Therefore, by setting the second surface 32 to be the skin-contact surface side, it is possible to improve the appearance (texture) of the non-skin-contact surface of the worn article.
  • the around-torso elastic member FT is arranged along a first side edge E1 and a second side edge E2 along the carrying direction of the layered sheet S;
  • both of the front around-torso portion T1 and the rear around-torso portion T2 from two, first and second, continuous webs.
  • the method further includes a bridging step of intermittently providing absorbent bodies C so as to bridge between the first divided sheet S1 and the second divided sheet S2, each of the absorbent bodies C connecting together the front around-torso portion T1 and the rear around-torso portion T2 and being to be a crotch portion.
  • the around-leg elastic member FL is arranged in a periodic wave-like pattern in the bonding step of producing the stretchable continuous sheet S0 so that the around-leg elastic member FL arranged on the first divided sheet S1 and the around-leg elastic member FL arranged on the second divided sheet S2 extend close to each other in an area where each of the absorbent bodies C bridges, and the around-leg elastic member FL arranged on the first divided sheet S1 and the around-leg elastic member FL arranged on the second divided sheet S2 extend away from each other in an area between adjacent absorbent bodies C of the absorbent bodies C.
  • another around-torso elastic member F2 extending straight along the carrying direction is further sandwiched between the layered sheet S and the narrower second divided web W12, and attached thereto by the adhesive, thereby producing the stretchable continuous sheet S0 .
  • the other elastic member F2 is arranged in a lower portion of the around-torso area near the around-leg area, it is possible to improve the fitting property of the around-torso portion.
  • the first and second continuous webs W1, W2 are made of a thermoplastic resin; and the welding step is performed by ultrasonic welding or heat sealing.
  • thermoplastic first and second webs can easily be welded to elastic members.
  • each web may be a thermoplastic non-woven fabric obtained by layering together a large number of thermoplastic fibers.
  • the worn article 1 of the present embodiment has a left-right symmetric shape and a left-right symmetric structure, and includes an absorbent body C and front and rear around-torso portions T1, T2.
  • the front around-torso portion T1 extends in the girth direction X covering the front torso of the wearer.
  • the rear around-torso portion T2 extends in the girth direction X covering the rear torso of the wearer.
  • the absorbent body C is provided so as to bridge between the around-torso portions T1, T2, and includes a crotch portion 22 covering the crotch of the wearer.
  • the absorbent body C extends in the vertical direction Y being orthogonal to the girth direction X.
  • the absorbent body C accounts for a part or whole of the crotch portion 22.
  • the worn article may be a pants-type worn article wherein end portions of the front and rear around-torso portions T1, T2 in the girth direction X are attached (sealed) together while overlapping with each other.
  • An absorbent core (not shown) is provided on the absorbent body C.
  • the absorbent core absorbs body fluid.
  • the absorbent core is sandwiched between a top sheet and a back sheet. The sheets and the absorbent core are layered together.
  • the top sheet is made of a thin liquid-permeable non-woven fabric and coves the skin-contact surface of the absorbent core. Cuffs (not shown) may be provided on the top sheet.
  • the back sheet covers the non-skin-contact surface of the absorbent core, and is made of a liquid-impermeable resin sheet.
  • the end portions of the absorbent body C in the vertical direction Y are bonded to the around-torso portions T1, T2.
  • the around-torso portions T1, T2 protrude from the absorbent body C in the girth direction X.
  • the around-torso portions T1, T2 are provided with around-torso and around-leg elastic members FT, F2, FL for making the worn article 1 fit to the wearer.
  • the elastic members may be line-shaped or chord-shaped.
  • an elastic member may be a multi-strand member, which is a bunch of rubber threads (elastic fibers).
  • the material of the rubber threads may be polyurethane, for example.
  • the first around-torso elastic members FT and the second (other) around-torso elastic members F2 may extend in the girth direction X in a straight arrangement and parallel to each other.
  • the elastic members FT, F2, arranged in a straight arrangement and parallel to each other, may be nullified (left with no shrinking force) over an area that overlaps with the absorbent body C.
  • a plurality of around-leg elastic members FL are arranged parallel to each other and in a wave-like pattern along lower edge outlines 10E of the around-torso portions T1, T2.
  • the lower edge outline 10E becomes the lower edge when worn.
  • around-torso portions T1, T2 are each a stretchable sheet 10 .
  • the absorbent body C of FIG. 1(a) may be formed with a narrowed portion (not shown) where the absorbent body C is narrowed along the crotch of the wearer.
  • the crotch portion 22 may be provided with further around-leg elastic members made of, for example, rubber threads, or the like, for conformity around the legs of the wearer.
  • the absorbent body C is bonded to the skin-contact surface of the around-torso portions T1, T2.
  • the skin-contact surface refers to a surface that faces the skin of the wearer when the worn article 1 is worn
  • non-skin-contact surface refers to the surface opposite to the skin-contact surface
  • the stretchable sheet 10 of the worn article has the skin-contact surface to be in contact with the skin of the wearer and the non-skin-contact surface opposite to the skin-contact surface.
  • the stretchable sheet 10 includes first and second around-torso webs 11, 12, an around-leg web 13 and elastic members FT, F2, FL layered together.
  • the first around-torso elastic members FT are welded and secured between the first around-torso web 11 and the second around-torso web 12.
  • the second around-torso elastic members F2 and the around-leg elastic members FL are bonded by an adhesive and secured between the first around-torso web 11 and the around-leg web 13.
  • a plurality of first around-torso elastic members FT are arranged between the pair of webs 11, 12 and are arranged spaced apart from each other as indicated by broken lines in FIG. 1(c) .
  • the stretchable sheet 10 forms a large number of folds with the elastic members being shrunk, thereby fitting to the skin of the wearer.
  • the first around-torso elastic members FT of FIG. 1(b) are arranged between the non-skin-contact surface, which is a first surface 31, of the first around-torso web 11 and the second around-torso web 12.
  • the area of the second around-torso web 12 to be the upper edge is folded back and bonded to the skin-contact surface, which is a second surface 32, of the first around-torso web 11.
  • the second around-torso elastic members F2 and the around-leg elastic members FL of FIG. 1(b) are arranged between the pair of webs 11, 13 and are spaced apart from each other as indicated by broken lines in FIG. 1(c) .
  • the second around-torso elastic members F2 and the around-leg elastic members FL are arranged between the skin-contact surface, which is the second surface 32, of the first around-torso web 11 and the around-leg web 13 of FIG. 1(b) .
  • the absorbent body C of FIG. 1(a) is provided so as to bridge between the front around-torso portion T1 and the rear around-torso portion T2 so as to cover a part of the upper edge 13E of the around-leg web 13. Therefore, the upper edge 13E of the around-leg web 13 does not contact the front torso or the rear torso of the wearer, thus improving the feel (wearability).
  • units of individual worn articles are visibly indicated by two-dot-chain lines extending in the width direction, which is orthogonal to the carrying direction of the semi-finished product.
  • the first and second continuous webs W1, W2 are continuously carried in the predetermined carrying direction (girth direction) X1. While being carried, the first slitting step of slitting the first continuous web W1 along the virtual first cut-off line C1 extending in the carrying direction X1, thereby dividing the first continuous web W1 into a wider first divided web W11 and a narrower second divided web W12 is performed.
  • the width D11 of the first divided web W11 is greater than the width D12 of the second divided web W12.
  • the width D2 of the second continuous web W2 is greater than the width D11 of the first divided web W11 .
  • the first around-torso elastic members FT being stretched extending in the girth direction X (the carrying direction X1 ) are sandwiched between the wider first divided web W11 and the second continuous web W2, and the welding step of welding together the first divided web W11, the second continuous web W2 and the first around-torso elastic members FT intermittently in the carrying direction X1, thereby producing a layered sheet S , is performed.
  • the webs W11, W2 and the first around-torso elastic members FT are introduced between an ultrasonic horn 50 and an anvil roll 51.
  • the horn 50 in cooperation with the anvil roll 51, ulstrasonically welds the pair of webs W11, W2 together, and welds the around-torso elastic members FT to the pair of webs, thus holding the around-torso elastic members FT with the pair of webs.
  • the welding step may be performed by using heat sealing instead of ultrasonic welding.
  • the width D11 of the wider first divided web W11 of FIG. 3(a) is smaller than the width D2 of the second continuous web W2, and the first divided web W11 has first and second side edges E1, E2 along the carrying direction X1.
  • the folding back step of folding a pair of third side edges E3 along the carrying direction X1 of the second continuous web W2 so as to wrap the first and second side edges E1, E2 of the first divided web W11 is performed.
  • the bonding step is performed by sandwiching a plurality of second around-torso elastic members F2, separate from the first around-torso elastic members FT, and around-leg elastic members FL between the layered sheet S and the narrower second divided web W12 while the second around-torso elastic members F2 and the around-leg elastic members FL are stretched, and attaching these members together by an adhesive, thereby producing a stretchable continuous sheet S0 .
  • a plurality of second around-torso elastic members F2 extend straight along the carrying direction X1 and parallel to each other.
  • the around-leg elastic members FL extend along a predetermined wave-like pattern while meandering relative to the carrying direction X1, and are arranged in a periodic wave-like pattern.
  • an adhesive is applied from an applicator 52 to the layered sheet S and the second divided web W12, and then the around-leg elastic members FL are introduced between a pair of nip rolls 53, 53 while being arranged between the layered sheet S and the second divided web W12.
  • An introducer 54 guides the around-leg elastic members FL while repeatedly reciprocating in the axial direction of the nip rolls 53, 53 so that the around-leg elastic members FL extend while meandering in a predetermined wave-like pattern as shown in FIG. 3(a) .
  • the first around-torso elastic members FT are arranged along the first and second side edges E1, E2 along the carrying direction X1 of the layered sheet S.
  • the second around-torso elastic members F2 and the around-leg elastic members FL are arranged in a central area between a first side edge E1 and a second side edge E2 of the layered sheet S.
  • the first divided sheet S1 is to be the front around-torso portion T1 including a part of the around-leg elastic members FL, a part of the around-torso elastic members FT, F2, and the first side edge E1 ( FIG. 1(c) ) .
  • the second divided sheet S2 is to be the rear around-torso portion T2 including the remaining part of the around-leg elastic members FL, the remaining part of the around-torso elastic members FT, F2, and the second side edge E2 ( FIG. 1(c) ).
  • the first around-torso elastic members FT and the second around-torso elastic members F2 of the stretchable continuous sheet S0 obtained by the welding and bonding steps described above may be nullified by being cut off, for example, in an area where the absorbent body C is arranged ( FIG. 5 ), as well known in the art.
  • the second continuous web W2 is layered on the first surface 31 of the first divided web W11 .
  • the third side edges E3 of the second continuous web W2 are folded so as to overlap with the second surface 32 of the first divided web W11 .
  • the second divided web W12 is bonded to the second surface 32 of the first divided web W11 .
  • the width-increasing step of carrying a first and second divided sheets S1, S2 so that a pair of divided sheets S1, S2 move away from each other is performed. Then, the divided sheets S1, S2 are spaced apart from each other.
  • the divided sheets S1, S2 may be redirected by redirection rollers 55 so that the divided sheets S1, S2 are carried upside down as shown in FIG. 4(a) , for example.
  • the bridging step to be described below is performed after the width-increasing step.
  • the absorbent bodies C to be the crotch portions 22 are intermittently provided so as to bridge between the first divided sheet S1 and the second divided sheet S2.
  • the around-leg elastic members FL are arranged in a periodic wave-like pattern as will be described below.
  • the around-leg elastic members FL are arranged so that the around-leg elastic members FL arranged on the first divided sheet S1 and the around-leg elastic members FL arranged on the second divided sheet S2 of FIG. 4(a) extend close to each other in areas where the absorbent bodies C of FIG. 5C bridge, and the around-leg elastic members FL arranged on the first divided sheet S1 and the around-leg elastic members FL arranged on the second divided sheet S2 extend away from each other in areas between the adjacent absorbent bodies C ( FIG. 5 ).
  • the divided sheets S1, S2 of FIG. 5 are trimmed between adjacent absorbent bodies C so that the edge to be the lower edge when worn (the lower edge outline 10E ) is trimmed along the curve of the around-leg elastic members FL, thereby producing a continuous laminate S3. Note that trimming is not always necessary.
  • the layered sheet S of FIG. 3(a) may be divided in two along a wave-like cut-off line with the around-leg elastic members FL arranged so as to extend along the wave-like shape. Trimming may be performed at any point in time after the production of the stretchable continuous sheet S0 .
  • the continuous laminate S3 is folded in two at the absorbent body C so that the first divided sheet S1 and the second divided sheet S2 overlap with each other, and the first side edge E1 and the second side edge E2 overlap with each other.
  • the continuous laminate S3 is severed along the virtual third cut-off line C3 indicated by a two-dot-chain line, and the first divided sheet S1 and the second divided sheet S2 are welded together in the vicinity of the third cut-off line C3, thus achieving so-called seal.
  • the present worn article does not need to include cuffs, or the like.
  • the tension of the elastic members may be nullified even in areas of the around-torso portion other than areas thereof that overlap with the absorbent body.
  • the around-torso portion does not need to be produced while being slit in two.
  • the present invention is applicable to worn articles of various types such as a pants type and a diaper type.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Vascular Medicine (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Epidemiology (AREA)
  • Manufacturing & Machinery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Botany (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Claims (8)

  1. Méthode de fabrication de couches et de culottes jetables, comprenant:
    une étape de transport d'une première bande continue (W1) et d'une seconde bande continue (W2) dans une direction de transport prédéterminée;
    une première étape de refente de la première bande continue (W1) le long d'une première ligne de coupe virtuelle (C1) s'étendant dans la direction de transport, divisant ainsi la première bande continue (W1) en une première bande divisée plus large (W11) et une seconde bande divisée plus étroite (W12);
    une étape consistant à prendre en sandwich un élément élastique autour du torse (FT) s'étendant dans le sens de la circonférence entre la première bande divisée plus large (W11) et la deuxième bande continue (W2);
    une étape de soudage consistant à souder ensemble la première bande divisée (W11), la deuxième bande continue (W2) et l'élément élastique autour du torse (FT) de manière intermittente dans la direction de portage, produisant ainsi une feuille stratifiée (S); et
    une étape de collage consistant à prendre en sandwich un élément élastique autour de la jambe (FL) en serpentant par rapport à la direction de transport entre la feuille stratifiée (S) et la deuxième bande divisée plus étroite (W12), et à fixer l'élément élastique autour de la jambe (FL) à celle-ci par un adhésif, produisant ainsi une feuille continue extensible (S0).
  2. Procédé de fabrication selon la revendication 1, dans lequel:
    une largeur (D11) de la première bande divisée plus large (W11) est inférieure à une largeur (D2) de la deuxième bande continue (W2), et la première bande divisée (W11) a un premier bord latéral (E1) et un deuxième bord latéral (E2) le long de la direction de transport; et
    la méthode comprend en outre une étape de pliage arrière consistant à plier une paire de troisièmes bords latéraux (E3) le long de la direction de transport de la deuxième bande continue (W2) de manière à envelopper les premiers et deuxièmes bords latéraux (E1, E2) de la première bande divisée (W11).
  3. Procédé de fabrication selon la revendication 2, dans lequel:
    dans l'étape de soudage, la deuxième bande continue (W2) est superposée sur une première surface (31) de la première bande divisée (W11);
    dans l'étape de repli, les troisièmes bords latéraux (E3) de la deuxième bande continue (W2) sont repliés de manière à chevaucher une deuxième surface (32) de la première bande divisée (W11); et
    dans l'étape de collage, la seconde bande divisée (W12) est collée à la seconde surface (32) de la première bande divisée (W11).
  4. Procédé de fabrication selon la revendication 1, dans lequel:
    lors de l'étape de soudage, l'élément élastique autour du torse (FT) est disposé le long d'un premier bord latéral (E1) et d'un second bord latéral (E2) le long de la direction de transport de la feuille stratifiée (S);
    lors de l'étape de collage de la feuille continue étirable (S0), l'élément élastique autour de la jambe (FL) est disposé dans une zone centrale entre le premier bord latéral (E1) et le deuxième bord latéral (E2) de la feuille stratifiée (S); et
    le procédé comprend en outre une deuxième étape de découpe consistant à découper la feuille continue étirable (S0) le long d'une deuxième ligne de coupe virtuelle (C2) dans la direction de transport, produisant ainsi une première feuille divisée (S1) et une deuxième feuille divisée (S2),
    la première feuille divisée (S1) est une partie avant autour du torse (T1) comprenant une partie de l'élément élastique autour de la jambe (FL), l'élément élastique autour du torse (FT) disposé sur le premier bord latéral (E1), et le premier bord latéral (E1), et
    la deuxième feuille divisée (S2) est une partie arrière du torse (T2) comprenant une partie restante de l'élément élastique autour de la jambe (FL), l'élément élastique autour du torse (FT) disposé sur le deuxième bord latéral (E2), et le deuxième bord latéral (E2).
  5. Le procédé de fabrication selon la revendication 4, comprenant en outre une étape de pontage consistant à fournir par intermittence des corps absorbants (C) de manière à faire le pont entre la première feuille divisée (S1) et la deuxième feuille divisée (S2),
    chacun des corps absorbants (C) reliant la partie avant du torse (T1) et la partie arrière du torse (T2) et constituant une partie de l'entrejambe.
  6. Procédé de fabrication selon la revendication 5, dans lequel:
    l'élément élastique autour de la jambe (FL) est disposé selon un motif périodique en forme de vague lors de l'étape de collage de la feuille continue étirable (S0) de sorte que l'élément élastique autour de la jambe (FL) disposé sur la première feuille divisée (S1) et l'élément élastique autour de la jambe (FL) disposé sur la deuxième feuille divisée (S2) s'étendent à proximité l'un de l'autre dans une zone où chacun des corps absorbants (C) s'étendent en pont, et l'élément élastique autour de la jambe (FL) disposé sur la première feuille divisée (S1) et l'élément élastique autour de la jambe (FL) disposé sur la deuxième feuille divisée (S2) s'étendent à distance l'un de l'autre dans une zone entre les corps absorbants (C) adjacents des corps absorbants (C).
  7. Procédé de fabrication selon l'une quelconque des revendications 1 à 6, dans lequel:
    lors de l'étape de collage de la feuille continue extensible (S0), un autre élément élastique autour du torse (F2) s'étendant en ligne droite le long de la direction de transport est pris en sandwich entre la feuille stratifiée (S) et la seconde bande divisée plus étroite (W12), et fixé à celle-ci par l'adhésif, produisant ainsi la feuille continue extensible (S0).
  8. Procédé de fabrication selon l'une quelconque des revendications 1 à 7, dans lequel:
    la première et la deuxième bande continue (W1, W2) sont constituées d'une résine thermoplastique; et
    l'étape de soudage est réalisée par soudage ultrasonique ou par thermosoudage.
EP20815400.5A 2019-05-31 2020-05-15 Procede de fabrication d'article a porter Active EP3977970B1 (fr)

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JP2757932B2 (ja) * 1993-05-26 1998-05-25 株式会社日本吸収体技術研究所 テープレス形吸収体製品およびその製造方法
JP3916878B2 (ja) * 2001-04-12 2007-05-23 ユニ・チャーム株式会社 使い捨てのパンツ型おむつ
US6979380B2 (en) * 2002-10-01 2005-12-27 Kimberly-Clark Worldwide, Inc. Three-piece disposable undergarment and method for the manufacture thereof
EP2433601B2 (fr) * 2003-08-06 2019-11-13 Zuiko Corporation Procédé de fabrication d'un article vestimentaire jetable
JP4012865B2 (ja) * 2003-08-22 2007-11-21 株式会社リブドゥコーポレーション 使い捨てパンツ型オムツの製造方法
CN101087575B (zh) * 2004-12-24 2010-09-15 株式会社瑞光 一次性穿着物品的制造方法
DE112006003366B4 (de) * 2005-12-16 2017-03-30 Zuiko Corp. Verfahren zur Herstellung eines tragbaren Artikels
US8852372B2 (en) * 2006-05-12 2014-10-07 Sca Hygiene Products Ab Pant-type absorbent article and a method for producing pant-type absorbent articles
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JP5616952B2 (ja) * 2012-12-20 2014-10-29 花王株式会社 パンツ型吸収性物品の製造方法
JP6044802B2 (ja) 2014-03-31 2016-12-14 大王製紙株式会社 吸収性物品の伸縮構造の製造方法
WO2016208513A1 (fr) 2015-06-22 2016-12-29 株式会社瑞光 Élément composite apte à l'étirement/contraction, article vestimentaire et procédé de fabrication d'article vestimentaire
EP3346963B1 (fr) 2015-09-09 2022-12-28 Essity Hygiene and Health Aktiebolag Article absorbant de type culotte jetable doté d'un parement de jambe
CN114983681B (zh) * 2017-02-22 2023-12-05 Dsg科技控股有限公司 带有含弹性体分布的底盘的制品、吸收芯及其制造系统和方法

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EP3977970A1 (fr) 2022-04-06
CN113811273A (zh) 2021-12-17
US11648154B2 (en) 2023-05-16
EP3977970C0 (fr) 2023-10-11
CN113811273B (zh) 2022-04-15
EP3977970A4 (fr) 2022-08-24
JPWO2020241300A1 (fr) 2020-12-03
WO2020241300A1 (fr) 2020-12-03
US20220202625A1 (en) 2022-06-30
JP7277578B2 (ja) 2023-05-19

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